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<title>HELP_CB</title>

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<h2>HELP_CB</h2>
<p>Action generated when the user press F1 at a control. In 
  Motif is also activated by the Help button in some workstations keyboard.</p>
<h3>Callback</h3>
<pre>void function(Ihandle *<b>ih</b>); [in C]
<strong>elem</strong>:help_cb() -&gt; (<strong>ret</strong>: number) [in Lua]</pre>
<p><strong>ih</strong>:
  identifier of the element that activated the event.</p>
<p><u>Returns</u>: IUP_CLOSE will be processed.</p>
<h3>Affects</h3>
<p>All elements with user interaction.</p>

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